Update app.py

app.py

@@ -270,6 +270,7 @@ def chatbot(query):
 #demo.queue()
 #demo.launch(share=False)
 # Initialize chat history with a welcome message
+import io
 
 def save_chat_to_file(chat_history):
     timestamp = time.strftime("%Y%m%d-%H%M%S")
@@ -277,9 +278,12 @@ def save_chat_to_file(chat_history):
 
     # Prepare the file content
     file_content = json.dumps(chat_history, ensure_ascii=False, indent=2)
-
-    # Return the file as a download link
-    return (filename, file_content)
+    
+    # Create an in-memory file (using io.BytesIO or io.StringIO)
+    file_obj = io.StringIO(file_content)
+    
+    # Return the file object and filename so Gradio can process it
+    return (filename, file_obj)
 
 def ask(user_message, chat_history):
     if not user_message: